Cultivator.



No. 705,208. Patented July 22, I902.

S. C. COBB.

CULTIVATOR.

(Application filed my 27, 1909.) (No Model.)

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No. 705,208. Patented July 22, I902. S. C. COBB.

CULTIVATOB.

. (Ajplication filed May 27, 1902.) (No mail.) 2 Sheets-Sheet 2.

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NITE "rn'rns SAMUEL C. COBB, OF JANESVILLE, WISCONSIN, ASSIGNOR TO THE .IANESVILLE MACHINE COMPANY, OF JANESVILLE, WISCONSIN, A CORPORATION OF WISCONSIN.

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SPECIFICATION forming part of Letters ."Eatent No. 705,208, dated July 22, 1902. Application filed May 27, 1902.. Serial No. 109,242. (No model.)

Z0 all whom it may concern.-

Be it known that I, SAMUEL O. COBB, of the city of J anesville, in the county of Rock and State of Wisconsin ,have invented certain new and useful Improvements in Cultivators, of which the following is a specification.

The object of this invention is to yielding] y sustain the beams of wheel-cultivators in a manner permitting an unusual degree of lateral swing in a horizontal plane.

The invention is exemplified in the structure hereinafter described, and it is defined in the appended claims.

In the drawings forming partof this specification, Figure 1 is an elevation of so much of a wheel-cultivator as is needed to explain my invention. Fig. 2 is a detail of a cultivator-beam and cushion-hitch in side elevation. Fig. 3 is a detail plan illustrating the operationof the invention.

The cultivator-beam is shown at 1, and it may be simple or complex and of any desirable form and construction. The beam is hitched at its front end to the cultivator-frame in a manner permitting free vertical and horizontal swing andit is restrained against torsional motion.

At 6 is shown a clamp pivoted to a frame rod to swing vertically and a drag-bar fork pivoted to the clamp to swing horizontally and connected with the cultivator-beam 1. This is a common form of beam-hitch, and it exemplifies the motion of the beam. A horizontal lift-rod 2 has a vertical extension 2, which pivots in a bracket 7, attached to the beam near the center thereof. The free end of rod 2 extends forward in this instance, and a lift-chain 3 connects with such swinging end through a cushion-spring 4:. The chain 3 connects at its upper end with a lever 5, by means of which the beam is raised or lowered. When the lever 5 is set to bring the shovels of the beam into cultivating positions, the shovels may be lowered to follow occasional depressions by pressure exerted on the beam, and the spring at will promptly raise the beam to its normal position when the pressure is released. The beams are swung from side to side to follow the rows. Irregular planting at times necessitates extensive side swing,

and if the chain and spring were connected directly to the beam the-beam would tend to follow an are described by the lift-hitch with the end of the lever for a center, and the shovels would either rise out of the ground to some extent or excessive pressure would need to be applied against the spring tension when the beam occupied its extreme positions; but when the lift-hitch is made with the swinging end of arm 2 the arm swings in a direction opposed to the swing of the beam, and the chain and spring remain approximately vertical while the beam moves freely in a horizontal plane. In this instance the.

pivot of the lift-arm is in the rear of the lifthitch; but it is obvious that the pivot may be in front of the hitch. The essential thing is that the pivot shall be located on or near a line drawncentrally lengthwise of the beam and that the swinging end of the arm shall approximately coincide with the central line when the beam is inan intermediate position with regard to lateral swing. The invention is applicable to various styles of wheel-cultivators, either riding or walking or riding and walking.

I claim- 1. In awheel-cultivator, the combination of a cultivator-beam hinged at its forward end to swing vertically and horizontally, an arm pivoted vertically in the beam and extended horizontally and a lift-hitch connected with the swinging end of the arm.

2. In a wheelcultivator, the combination of a cultivator-beam hinged at its forward end to swing vertically and horizontally, an arm pivoted verticallyin the beam and extended horizontally and a yielding lift-hitch connected with the swinging end of the arm.

3. In a wheel-cultivator, the combination of a cultivator-beam hinged at its forward end to swing Verticallyand horizontally, an arm pivoted vertically in the beam and extended horizontally and a flexible, yielding lift-hitch connected with the swinging end of the arm.

4. In a wheel-cultivator, the combination of a cultivator-beam hinged atits forward end to swing vertically and horizontally, an arm pivoted vertically in the beam and extended horizontally, a lift-lever, and a yielding connection between'the lift-lever and the swinging otedvertieally in the beam and extended hori end of the arm. zontally with its swinging end below the lift 5. Inawheel-cultivator, the combination of end of the lever, and a connection between acultivator-beam hinged at its forward end to I the lever and the swing end of the arm.

5 swing vertically and horizontally, an arm piv- In testimony whereof I sign my name in the I5 oted vertically in the beam and extended horipresence of two subscribing witnesses. zontally, a lift-lever located above the beam SAMUEL O. COBB. in approximate alinement with the longitndi- Witnesses: nal center of the beam, when the beam is F. H. FARNSWORTH,

1o swung straight behind its pivot, an arm piv- R. C. PURCELL. 

